Reso 2004-725 - Laserfiche WebLink

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The architecture of the Cisco IP Telephony solution consists of the following primary components: · Communications endpoints A communications endpoint is a user instrument-either a desk phone or a software phone application that runs on a Pc. In the IP environment, each phone has an Ethernet connection. IP phones have all of the functions that a telephone provides, as well as additional features, such as the ability to access Websites, or productivity-enhancing applications. Only Cisco offers a complete portfolio of true IP phones-solid, inviting, simple-to-use, functional, and fully featured next-generation communications devices. In a Cisco IP Telephony network, users can also choose a PC-based phone-the Cisco IP Communicator. When using the Cisco IP Communicator remotely, users are not only taking their office extensions with them-they also have access to all of the same familiar phone services and features they have in the office. System administrators can provision Cisco IP Communicator as they would any other Cisco IP Phone, greatly simplifying IP phone management. Unlike traditional PBX systems, moves, adds, and changes are now virtually instanta- neous. A user simply takes the IP phone to the new location, plugs it into the Ethernet jack, and the phone registers itself with Cisco CallManager. All user privileges and set- tings are automatically re-established, eliminating the cost and delay of sending technicians to wiring closets. Another helpful feature is extension mobility, which allows users to Jog into any Cisco IP phones and receive their own phone numbers and privileges. · Call-processing agent At the heart of the Cisco IP Telephony system is the call-processing agent. Whether deploying a centralized call-processing model, a decentralized model, or a combination of both, Cisco IP Telephony solutions meet individual organizatiollal needs. In a centralized deployment, Cisco CallManager extends iCnterprise telephony features and capabilities to packet telephony network devices such as IP phones, media processing devices, voice over IP (VoIP) gateways, and multimedia applications throughout the network. Additional voice, video, and data services such as unified messaging, multimedia conferencing, collaborative customer interaction networks, and interactive multimedia response systems interact with the IP telephony solution through the open telephony APls of Cisco CallManager. When a central Cisco CallManager cluster also handles call processing for users at distributed sites, administrators can help ensure continuous phone service using Cisco Survivable Remote Site Telephony (SRST), a Cisco IOS@ Software image ior Cisco routers. If a WAN link fails, Cisco SRST in the router provides basic Cisco CallManager capabilities until the link is restoreli- In case of emergency, Cisco Emergency Responder correctly identifies the caller's location to a 911 dispatcher. This is an important capability in a centrally managed, highly dispersed network design, where a Cisco Call Manager cluster may be processing calls for a user in another city or state. FOt small offices or "loosely coupled" small enterprise branch locations that do not require the full, enterprise-class feature set offered by Cisco CallManager, Cisco CallManager Express offers a cost-effective solution that meets the requirements of sites with fewer than 100 employees. Since Cisco CallManager Express is embedded in the Cisco IOS Software running on a Cisco multiservice access router, smaller offices are able to simply and easily deploy a converged voice and data solution. Cisco CallManager and Cisco CallManager Express effectively interoperate to address the varying call-processing requirements of an organization throughout its entire network. 3